Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN: 9781259696527
Author: J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher: McGraw-Hill Education
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Q3: Benzene CaHs is converted to cyclohexane CsH12 by direct reaction with
H2. The fresh feed to the process is 260 L/min of CoHs plus 950 L/min of H2
at 100 °C and 150 kPa. The single pass conversion of H2 in the reactor is
48% while the overall conversion of Hz in the process is 75%. The recycle
stream contains 90% H2 and the remainder benzene (no cyclohexane).
1) Write a balanced equation for the above reaction.
2) Determine the partial pressure of H2 and CoHs in the fresh feed.
3) Determine the molar flow rates of H2. CsHo and C&H12 in the existing
product.
4) Determine the volumetric flow rate of the components in the product
stream if it exits at 100 kPa and 200 °C.
5) Determine the molar flow rate of the recycle stream (Hint: do H-
atomic balance on both reactor and separator together).
6) Determine the volumetric ratio of the recycle stream at 100 °C and
100 kPa to the fresh stream at STP.
Use atomic species balances to solve the question.
R male (10%CH, 90%H;)
100 °C, 100 kPa
Fresh feed, F
@ 200 °C and 100kPa
@ 100 °C and 150kPa
26OL/min CH,
950L/min H;
nH2
nC;H12
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Transcribed Image Text:Q3: Benzene CaHs is converted to cyclohexane CsH12 by direct reaction with H2. The fresh feed to the process is 260 L/min of CoHs plus 950 L/min of H2 at 100 °C and 150 kPa. The single pass conversion of H2 in the reactor is 48% while the overall conversion of Hz in the process is 75%. The recycle stream contains 90% H2 and the remainder benzene (no cyclohexane). 1) Write a balanced equation for the above reaction. 2) Determine the partial pressure of H2 and CoHs in the fresh feed. 3) Determine the molar flow rates of H2. CsHo and C&H12 in the existing product. 4) Determine the volumetric flow rate of the components in the product stream if it exits at 100 kPa and 200 °C. 5) Determine the molar flow rate of the recycle stream (Hint: do H- atomic balance on both reactor and separator together). 6) Determine the volumetric ratio of the recycle stream at 100 °C and 100 kPa to the fresh stream at STP. Use atomic species balances to solve the question. R male (10%CH, 90%H;) 100 °C, 100 kPa Fresh feed, F @ 200 °C and 100kPa @ 100 °C and 150kPa 26OL/min CH, 950L/min H; nH2 nC;H12
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